Welcome to Android Central! Good ideas there. Can you give more details about how it stopped working? Is it giving you error messages? Does it just not open?
Unfortunately Polaris Office 5 has stopped working. I can open it using the app but when I try to open it using the downloaded document It closes but I could always open this certain document so I'm confused as to why I can't now
The document could have gotten corrupted. Polaris could have gotten corrupted. Try copying the document to a PC and opening it there. If you get garbage, it's the document.
I am having the same issue. ! try to open it in Google Drive, get the message the unfortunately Polaris has stopped working and cannot open it. I can open it on my computer. I cleared Polaris' cache, data, and even disabled it. Could not get my doc to open. Samsung S5